IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 32nd Congress - Venice (2007) : THEME C: Fluid Mechanics and Hydraulics : Two-dimensional modelling of discharge distribution in vegetated compound channel (besňs river)
Two-dimensional modelling of discharge distribution in vegetated compound channel (besňs river)
Author : Ernest Bladé, Manuel Gómez-Valentín, Martí Sánchez-Juny, Juan Pomares
Flow distribution in Besňs river is studied by means of a two dimensional numerical model and a scale model. Besňs river presents a compound channel floodway with a central sinusoidal main channel and floodplains at each side of it. Floodplains are used for wastewater treatment and for that reason covered with flexible 2m high vegetation. It is shown that good agreement of numerical model and physical model is achieved with a high resolution numerical model based on the conservative form of Saint Venant equations and finite volumes, provided variations of roughness with unit discharge is taken into account, with no need of turbulence models. Good results are achieved in predicting lateral discharge distribution and flow exchange from main channel and floodplains with the two dimensional approach, something that cannot be done with one dimensional models as exemplified with a one dimensional simulation of the same case.
File Size : 3,051,179 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 32nd Congress - Venice (2007)
Article : THEME C: Fluid Mechanics and Hydraulics
Date Published : 01/07/2007
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